table_properties_collector.cc
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
#include "db/table_properties_collector.h"
#include "db/dbformat.h"
#include "util/coding.h"
#include "util/string_util.h"
namespace rocksdb {
Status InternalKeyPropertiesCollector::InternalAdd(const Slice& key,
const Slice& value,
uint64_t file_size) {
ParsedInternalKey ikey;
if (!ParseInternalKey(key, &ikey)) {
return Status::InvalidArgument("Invalid internal key");
}
if (ikey.type == ValueType::kTypeDeletion) {
++deleted_keys_;
}
return Status::OK();
}
Status InternalKeyPropertiesCollector::Finish(
UserCollectedProperties* properties) {
assert(properties);
assert(properties->find(
InternalKeyTablePropertiesNames::kDeletedKeys) == properties->end());
std::string val;
PutVarint64(&val, deleted_keys_);
properties->insert({ InternalKeyTablePropertiesNames::kDeletedKeys, val });
return Status::OK();
}
UserCollectedProperties
InternalKeyPropertiesCollector::GetReadableProperties() const {
return {
{ "kDeletedKeys", ToString(deleted_keys_) }
};
}
namespace {
EntryType GetEntryType(ValueType value_type) {
switch (value_type) {
case kTypeValue:
return kEntryPut;
case kTypeDeletion:
return kEntryDelete;
case kTypeMerge:
return kEntryMerge;
default:
return kEntryOther;
}
}
} // namespace
Status UserKeyTablePropertiesCollector::InternalAdd(const Slice& key,
const Slice& value,
uint64_t file_size) {
ParsedInternalKey ikey;
if (!ParseInternalKey(key, &ikey)) {
return Status::InvalidArgument("Invalid internal key");
}
return collector_->AddUserKey(ikey.user_key, value, GetEntryType(ikey.type),
ikey.sequence, file_size);
}
Status UserKeyTablePropertiesCollector::Finish(
UserCollectedProperties* properties) {
return collector_->Finish(properties);
}
UserCollectedProperties
UserKeyTablePropertiesCollector::GetReadableProperties() const {
return collector_->GetReadableProperties();
}
const std::string InternalKeyTablePropertiesNames::kDeletedKeys
= "rocksdb.deleted.keys";
uint64_t GetDeletedKeys(
const UserCollectedProperties& props) {
auto pos = props.find(InternalKeyTablePropertiesNames::kDeletedKeys);
if (pos == props.end()) {
return 0;
}
Slice raw = pos->second;
uint64_t val = 0;
return GetVarint64(&raw, &val) ? val : 0;
}
} // namespace rocksdb